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A tool to create animated graph visualizations, based on graphviz

Project description

# GraphvizAnim

[![Build Status](]( [![Gitter](]( [![Binder](](

GraphvizAnim is a tool to create simple animated graph visualizations; it is just a proof of concept, aimed mainly at teaching purposes. It is based on [Graphviz]( for the graph rendering part and on [ImageMagick]( for the animated gif generation. You can [run the heap sort animation]( on-line using [binder](

<p align=”center”> <img src=”examples/dfv.gif”/> <img src=”examples/heapsort.gif”/> </p>

A graph animation is just a sequence of steps, a step is in turn one or more actions such as: add, hilight, label, unlabel or remove a node, and add, hilight, or remove an edge. Animations can be built by invoking suitable methods of a gvanim.Animation object (in a Python program), or by parsing a simple text file (that, in turn, can be generated by a program in any language).

The [examples](examples) folder contains few instances of such approaches. After installing the package with python install, or using

pip install

you can generate an animated depth first visit (in a 3-regular random graph of 6 nodes) by running

python examples/

or you can generate the simple animation described in [simple.txt](examples/simple.txt) as

python -m gvanim examples/simple.txt simple

You can generate an [Erdős–Rényi]( graph (with 10 nodes and edge probability 1/10) by running

cd examples gcc -o er er.c ./er | python -m gvanim er

Finally, you can obain an interactive visualization of the heap sort algorithm using [Jupyter]( by running

cd examples jupyter notebook heapsort.ipynb

and running all the cells in order; or you can give a try to [binder]( and watch the above animation [actually running]( on-line.

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